Revolving door.



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1.1. SCHALLER.

REVOLVING DOOR.

APPLICATION FILED Aue.23, 1911.

Patented Feb. 25, 1919 2 SHEETS-SHEET l- 792/ 1.1. SCHALLER.

BEVOLVING DOOR.

APPLICATION FILED AuG.23, I9II.

Peeeeeed Feb. 25, 1919.`

2 SHEETS-SHEET 2.

7 d I Mig?? )50 A fri JACOB 3'. SCHALLER, 0F CHICAGO, ILLINOIS.

REVOLVING DOOR.

Specication of Letters Patent.

, Patenten nen. 25, taie,

application ined august 2a, 1917. serial No. 187,750?.l

To all whom 'it may concern:

Be it known that l, JACOB J. SCHALLER,

a citizen of the United States, residing at Chicago, in the county ofCook and State of Illinois, have invented a new anduseful Improvement inRevolving Doors, of which the following is a specification.

My invention relates to an improvement i in the class of revolvingdoorsjn/which of its embodiment Fig. 2 is a broken view in plan sectionshowing the wings in their folded position; Fig. 3 is a vertical sectiontaken through one of the hinges connecting a wing with the center-post,lon line 3-3, Fig. 4; Fig. 4 is a section on line L1-4, Fig. 3, and Fig.5 is a view showing the two hinge-members in unassembled rela-tion withthe connecting links and spring and stopdevices on the members. g

The casing 6 shown comprises the usual members of arc-shape incross-section forming the passageway, with an axially rotatable centralpost 7, from each corner of which radiates a wing, four wings beingrepresented in Fig. 1, numbered, respectively, 8, 9, 10 and 11, hingedto the post and separably connected` as by chains 12 for causing thedoor to be operated in the ordinary manner, under normal conditions, bypassing through the passageway.

y rlhe`primary object of my invention is to. provide a hingedconstruction of the post and wings whereby each wing may be turned onits jhinge through 270 degrees of a circle,

c or approximately that extent, to fold the wings into the parallelrelation represented in Fig. 2, when desired, as in case of panic or tohave the door in collapsed condition for any other purpose. That objectis accomplished by the following described construction.I

The post 7 is of square cross-section with rounded corners. Each wing isa solid'structure, being rigid or non-sectional throughout; and it ishinged at its mner edge tothe post, that edge being rounded like theadjacent post-corner, and has exible weather-stripping 13 let into it.The hingeconnections are provided at proper intervals along the rotarypost, thus near its 'upper and lowerends, and also at one or more in'termediate points, as may be required. Each hinge comprises twolink-connected mem- The members 14, of metal, are let into'the postcorners and maybe fastened 1n place by screws, represented at 15 in Fig.5. This member is centrally bored longitudinally to accommodate a pintle16 and is formed at intervals on its face, which is rounded to conformto the post-corner, with sockets 17, of which two are represented,

and at corresponding intervals at its back with tubular housings 18,projecting rearwardly into the post, for spring-pressed studs 19. Theother hinge-member 20, also of metal, is let into -the rounded wing-edgeand may be fastened by screws,`as represented at 21. rlhis mem-ber hassockets 17a formedin its rounded Aface to register with those inthecompanion-member, and is, like the member 14, bored to receive a pintle16a; i and the member 20 is provided with'housings 18a extendingbackwardly from the innerends of the sockets 17a and containing, likethe housings18, spring-pressed studs 192. Similar links 22 it atcorresponding ends in the sockets of each hinge-member 14 and arerotatably held therein by a pintle 16, and they fit at their oppositeends 1n the sockets 17 a of the companion hinge-member 20 respectivelyregisterin with the sockets 17. The opposite ends o each link, whichshould be rounded, as shown, contain depressions 23, each in position toregister with an adjacent spring-pressed stud when the correspondingdoor-wing is in its normal ppsition, represented in Fig. 1, of radiatingom a post-corner, to admit the stud into the depression for holding thewing yield ingly in that p'osition.

Chains 12 are represented in Fig. 1 as the means extending between thewings for connecting them; and each chain is shown to be permanentlyfastened at one end to a face of one wing and to releasably hook at itsopposite end into an eye 24 on the o posing ile the intend b crowdagainst them, thereby overcoming the' yielding comparatively slightresistance of the spring-pressed studs or stops, and the pressure willturn those wings outwardly on their hinges to the position in which theyare represented on Fig. 2, thus through 270 degrees, or thereabout; andin attaining that Y position they will, respectively, encounter thewings 10 and 11 and turn the latter to extend as represented in thatfigure, thus causing all of the wings to be parallel between the sidesof the casing-passageway, which thus become unobstructed.

The hinge construction, moreover, enables the rounded inner edges of thewings to meet the rounded post-corners, whereby not only the desiredfull extent of turning the wings is attainable, but there is noappreciable space between the meeting surfaces, so that the door, in itsnormal operating condition, is practically draft-proof, though the strip13 may nevertheless be provided to effectively seal the joint.

ll realize that considerable variation is possible in the details ofconstruction thus specically shown and described, and I do notillustrating a single specific or referre embodiment of my invention toe limited thereto; my intention being in the following claims to. claim'protection naeaeov upon all there may be of novelty in my in- -on theirhinges through approximately 270 degrees of a circle, and spring-stopson the hinge-members for engaging the link-ends to yieldingly hold thewings in their radiating position.

2. ln a revolving door, the combination oie a rotatable center-post ofsquare cross-section having rounded corners, hinge-'members in eachcorner of the post, non-flexible onepiece wings having rounded inneredges, hinge-membersin said edges of the wings, said post and winghinge-members presenting opposing sockets, links pivotally conined attheir opposite ends in said opposing sockets to hold the innerwing-edges in close relation to the respective post-corners and permitthe wings to be extended radially from the post-corners and to beturned, from any angle against opposite post-sides independently of eachother on their hinges through approximately 270 degrees of a circle andbe folded to-extcnd side by side parallel with each other, and means forreleasably connecting the wings one with another in their radiatingposition.

JACOB J'. SOLER.

